"As early as 1774, Thomas Jefferson asserted in "A Summary View of the Rights of British America" that "the ability to migrate wasn't just an exercise of natural rights but the source of rights.... Liberty was made possible by the right to colonize, letting freemen, when their freedom was threatened, to move on to find free land and carry the torch from one place to another." As Grandin notes, Jefferson provided settlers "a historical and moral philosophy, telling them that their movement west wasn't just a fruit of freedom but the source of freedom." By 1805, Thomas Jefferson "couldn't think of any limit to U.S. expansion." In 1824, James Monroe stated, "There is no object which as a people we can desire which we do not possess or which is not within our reach." Here we can see the tension identified by Kotef as well as Hardt and Negri-a conception of sovereignty as "an open, expansive project operating on unbounded terrain" that exists alongside a "fantasy of closure and enclosure," involving "clearly demarcated territory, sealed within a border, which is a container of the people." Here we see that for certain subjects, movement is a manifestation of liberty that should be maximized. While for others, movement is something that must be tightly managed and regulated."